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Dentre os insetos-praga associados à seringueira no Brasil, o tingídeo Leptopharsa heveae Drake & Poor (Hemiptera: Tingidae) se destaca como uma das mais importantes, especialmente nas regiões Centro-Oeste e Sudeste do Brasil. Adultos e ninfas sugam a seiva nas folhas das plantas infestadas e, dependendo do nível populacional da praga, podem ocasionar perdas de até 30% na produção de látex. Este estudo objetivou verificar a infestação de ninfas e adultos de L. heveae, em oito clones de seringueiras (GT1, PB 235, PB 217, RRIM 600, RRIM 527, PR 228, PR 255 e IAN 873), no município de Itiquira, MT. No período de julho de 2003 a dezembro de 2005, semanalmente eram vistoriadas três folhas maduras, no terço inferior da copa de quatro árvores por clone, contabilizando o número de ninfas e adultos nas mesmas. Pelos resultados obtidos neste estudo conclui-se que: 1. Há diferenças no ataque de ninfas e adultos de L. heveae nos diferentes clones e entre os anos; 2. Os clones e PR 228 e PB 235 são os mais suscetíveis ao ataque de L. heveae nas condições edafoclimáticas da região, quando comparados aos demais; 3. O nível populacional de ninfas e adultos de L. heveae atinge seus picos entre os meses de setembro a outubro. Among the insect-pests associated with rubber trees in Brazil, the tingid Leptopharsa heveae Drake & Poor (Hemiptera: Tingidae) stands out as one of the most important, especially in the Center-West and Southeast regions of Brazil. Adults and nymphs suck the sap from the leaves of infested plants and, depending on the pest population level, can cause losses of up to 30% in latex production. This study aimed to verify the infestation of nymphs and adults of L. heveae, in eight rubber trees clones (GT1, PB 235, PB 217, RRIM 600, RRIM 527, PR 228, PR 255, and IAN 873), in the municipality of Itiquira, Mato Grosso state, Brazil. From July 2003 to December 2005, three mature leaves were inspected weekly, in the lower third of the canopy of four trees per clone, counting the number of nymphs and adults in them. From the results obtained in this study, it can be concluded that: 1. There are differences in the attack of nymphs and adults of L. heveae in different clones and between years; 2. The clones PR 228 and PB 235 are the most susceptible to the attack of L. heveae in the edaphoclimatic conditions of the region, when compared to the others; 3. The population level of nymphs and adults of L. heveae reaches its peak between the months of September to October. Made available in DSpace on 2022-09-15T17:06:12Z (GMT). No. of bitstreams: 1 27360.pdf: 186254 bytes, checksum: 958cc8d47a3867d8220bb142c0085a4a (MD5) Previous issue date: 2022

The cupuassu (Theobroma grandiflorum (Willd ex Sprengel) K. Schum.) is a native tree from the tropical rainforest and one of the most important fruit trees in the Amazon region. Its pulp and seeds are widely used in the alimentary industry, as well as food by the people of northern Brazil. Among the factors that can compromise the production of cupuassu are the attack of diseases and insect pests. The aim of this work is to report the attack of a wood-borer lepidopteran in commercial cupuassu plantation located in the district of Nova Califórnia, Rondônia State, Brazil. In April 2019 an infestation of a wood-borer insect was observed causing the death of branches. Branches containing caterpillars in their inside were collected and taken to the Entomology Laboratory of the Embrapa Acre, where they were placed in a screened cage. After about 60 days, an adult insect emerged, which was identified as Magulacra nigripennata, a lepidopteran associated with cocoa and cupuassu plantations in that country. A random survey of 100 plants in the plantation area detected an infestation level of 36%, indicating the harmful potential of this pest to the cupuassu crops in the Amazon region. Made available in DSpace on 2020-10-07T09:14:35Z (GMT). No. of bitstreams: 1 27032.pdf: 986600 bytes, checksum: 4c0ca83d81f4763af2c6e44d2ccaeec6 (MD5) Previous issue date: 2020

Resumo. Uma alta infestacao de Corythaica passiflorae (Berg) (Hemiptera: Tingidae) foi observada em plantas de jilo ( Solanum aethiopicum L. - grupo gilo) e berinjela ( Solanum melongena L.), em uma area de cultivo comercial no municipio de Paraiso do Tocantins, estado do Tocantins. Os insetos popularmente conhecidos como percevejos-de-renda foram observados em um alto numero populacional, na face inferior das folhas, provocando injurias e consequente prejuizo economico, com elevada queda na producao e mortalidade de plantas. Alem disso, tambem foi observada a associacao do tingideo com plantas de ocorrencia espontânea, tais como a jurubeba ( Solanum paniculatum L.) e o joa ( Solanum viarum Dunal), comuns na regiao e, que podem contribuir para a disseminacao dos insetos em outras areas produtoras de solanaceas. Este trabalho registra a primeira ocorrencia de C. passiflorae em plantios comerciais de jilo e berinjela no estado de Tocantins, alem do registro de novas plantas hospedeiras desse tingideo (joa e jurubeba) no Brasil. Occurrence of Corythaica passiflorae (Berg) (Hemiptera: Tingidae) on commercial plantations of gilo and eggplant in Tocantins state, Brazil Abstract. A high infestation of Corythaica passiflorae (Berg) (Hemiptera: Tingidae) was observed in gilo plants ( Solanum aethiopicum L. – gilo group) and eggplant ( Solanum melongena L.) in a commercial plantation area in the municipality of Paraiso do Tocantins, Tocantins state, Brazil. The insects popularly known as lace bugs were observed in a high population on the underside of the leaves, causing damages and consequent economic loss, with a high drop in plant production and plant mortality. Therefore, the association of the tingid with plants of spontaneous occurrence, such as jurubeba ( Solanum paniculatum L.) and tropical soda apple ( Solanum viarum Dunal), common in the region, which may contribute to the dissemination of insects in other solanaceous producing areas. This work reports the first occurrence of C. passiflorae in commercial plantations of gilo and eggplant in Tocantins state, besides the registration of new host plants of this tingid (joa and jurubeba) in Brazil.